S-98625A143 1/4"-80 x 3 1/2" Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit ensuring tight, secure fastening in precision assemblies.
• Excellent corrosion resistance provided by 303 stainless steel material, ideal for harsh or moist environments.
• Easy installation and removal with a 3/32" hex drive, allowing for efficient assembly in confined spaces.
• Enhanced grip and minimal surface damage due to the alloy steel ball tip, perfect for repeated adjustments.
• Reliable performance in fine-adjustment applications with 1/4"-80 ultra fine thread for precise positioning.
• Durable, headless design that sits flush, preventing snagging and saving space in compact machinery.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use.

Professional Applications & Engineering Value

This headless hex set screw is engineered from 303 stainless steel to resist corrosion and maintain integrity in demanding industrial settings. The ultra fine thread (1/4"-80 UNS) and Class 3A fit deliver exceptional clamping force, reducing the risk of loosening under vibration—a common pain point in machinery and precision equipment. The alloy steel ball tip minimizes marring on contacted surfaces, making it ideal for applications requiring frequent adjustments, such as in positioning devices, shafts, and collars. Its right-hand thread and hex drive design ensure straightforward installation, enhancing productivity in assembly lines while meeting strict RoHS and REACH standards for environmental safety.

Specification Summary & Compliance

This set screw features a 1/4"-80 UNS ultra fine thread with Class 3A fit for high precision and tight tolerance. It measures 3 1/2" in length with a 3/32" hex drive and ball tip made from alloy steel. The product complies with RoHS 3 (2015/863/EU) with exemption 6(c) and REACH (EC 1907/2006), ensuring adherence to environmental and safety regulations for reliable use in various industrial applications.